1246-阿尔兹海默症轴突球状体亚细胞蛋白组学研究 episode artwork

EPISODE · Jul 8, 2026 · 17 MIN

1246-阿尔兹海默症轴突球状体亚细胞蛋白组学研究

from 聊聊Sci

这项研究利用邻位标记蛋白质组学和诱人多能干细胞(iPSC)模型,深入揭示了阿尔茨海默病中轴突球形病变(PAAS)的分子结构与形成机制。科研人员在人类大脑样本和实验小鼠中发现了数百种新蛋白,证实了PI3K/AKT/mTOR信号通路在病理过程中的核心激活作用。研究指出,这种病变会严重干扰轴突电传导并破坏神经回路,且其严重程度与认知衰退密切相关。通过对iPSC衍生神经元和活体小鼠进行mTOR抑制治疗,研究团队成功减少了轴突球形的体积并缓解了病理症状。这些发现不仅阐明了蛋白质周转、细胞骨架动力学及脂质运输在神经退行性疾病中的作用,还为轴突损伤的修复提供了潜在的治疗靶点。References:Cai Y, Kanyo J, Wilson R, et al. Subcellular proteomics and iPSC modeling uncover reversible mechanisms of axonal pathology in Alzheimer’s disease[J]. Nature Aging, 2025, 5(3): 504-527.前往小宇宙评论区与主播互动

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1246-阿尔兹海默症轴突球状体亚细胞蛋白组学研究

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